OK Boston Blue we all know Frank Reagan we all know he would have to stay in New York unless he gets voted out of office but I see him being a part of Boston Blue not in every episode but say every now and then and more of a father figure less of a PC Arron Reagan could finally had enough of NY and move to Boston with a New Job title or just needed a fresh new scenery her daughter could become a DA following her mother's foot steps again Jammy could be like Frank have a occasional roll on Boston Blue along with Eddy Danny's sons could have a more occasional roll because they are his sons so main characters in almost every episode could be Danny his 2 kids Arron Nikki and Danny's new wife his partner from Blue bloods